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Product Name: |
APP-Ⅱ |
CAS Number: |
68333-79-9 |
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Other Trade Name: |
Ammonium polyphosphate |
Molecular Weight: |
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Chemical Formula: |
(NH4PO3)n |
Hazard Classification: |
N.A. |
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H.S.CODE: |
28353990 |
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Product Description: |
Ammonium polyphosphate (Phase II) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When APP-II is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer. |
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Specification |
201 |
201S |
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Appearance |
White powder |
White powder |
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P2O5 (w/w) |
≥71% |
≥71% |
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N Content (w/w) |
≥14% |
≥14% |
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Decomposition Temperature (TGA, 99%) |
＞275℃ |
＞275℃ |
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Solubility (10% aq. , at 25ºC) |
＜0.5% |
＜0.5% |
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pH value ( 10% aq. At 25ºC ) |
5.5-7.5 |
5.5-7.5 |
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Viscosity (10% aq, at 25℃) |
＜20 mpa.s |
＜20 mpa.s |
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Moisture (w/w) |
＜0.25% |
＜0.25% |
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Average Partical size (D50) |
about 18µm |
about 10µm |
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Package： |
25kg plastic woven bag with PE liner. 24mt/20’fcl without pallets, 20mt/20’fcl with pallets. Other packing as request. |
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Applications: |
1. used to prepare many kinds of high-efficiency intumescent coating, the flameproof treatment for wood, multistory building, ships, trains, cables, etc. |
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